Abstract: This study underscores the vital role of precise product specifications, with a particular focus on sustainability and manufacturability, in influencing customer preferences and purchase decisions, ultimately boosting product competitiveness. The investigation delves into the dynamics of a comparison-oriented product competition mechanism, employing big data from market platforms. The methodology entails collecting and modeling competing products, with a subsequent focus on game analysis to monitor specification competition. Sustainability and manufacturability are central to the evaluation process. Ultimately, the thesis presents a bi-level optimization model that enhances product competitiveness while placing sustainability and manufacturability at the forefront. A practical case study illustrates the real-world application of our methodology, demonstrating its efficacy and utility.